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GHK-Cu, also known as Copper Peptide GHK-Cu, is a peptide complex comprising the tripeptide Glycyl-L-Histidyl-L-Lysine bound to copper ions. It is a synthetic version of a naturally occurring copper peptide found in the human body.
Selank, as well as a related peptide drug, Semax, have been found to inhibit enzymes involved in the degradation of enkephalins and other endogenous regulatory peptides, and this action may be involved in their effects. It has also been found to affect the activity of carboxypeptidase H and phenylmethylsulfonylfluoride-inhibited carboxypeptidase in rat nervous system tissue.
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